21478956

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{499}}^1$

素因数の和:734

約数の個数: 48

約数和(自身を含む): 53424000

約数和(自身を除く): 31945044

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 211, 422, 499, 633, 844, 998, 1266, 1497, 1996, 2532, 2994, 3587, 5988, 7174, 8483, 10761, 14348, 16966, 21522, 25449, 33932, 43044, 50898, 101796, 105289, 210578, 315867, 421156, 631734, 1263468, 1789913, 3579826, 5369739, 7159652, 10739478, 21478956]

約数ペア:

[(1, 21478956), (2, 10739478), (3, 7159652), (4, 5369739), (6, 3579826), (12, 1789913), (17, 1263468), (34, 631734), (51, 421156), (68, 315867), (102, 210578), (204, 105289), (211, 101796), (422, 50898), (499, 43044), (633, 33932), (844, 25449), (998, 21522), (1266, 16966), (1497, 14348), (1996, 10761), (2532, 8483), (2994, 7174), (3587, 5988)]